- Density is the amount of matter contained by a body.
- Density is defined as mass per unit volume of the substance.
- It is denoted by, 'd' or 'ρ' (rho).
Do you Know
- The SI unit of density is kg/m^3.
- Its CGS unit of density is g/cm^3
Density = Mass/Volume
and by this formula, we can get the following formulae:
- Mass = Density * Volume
- Volume= Mass/Density
Density of Common Substances
Density of Water = 1 g/cm^3
Density of Air = 0.00129 g/cm^3
Density of Ice= 0.9 g/cm^3
Do You Know
- 2 substances always get separated into different layers according to their densities.
- The lighter substance always floats on the heavier substance. You may have noticed that:
- Oil floats on water this is because the density of oil is less than the density if water
- Ice floats on water this is because the density of ice is less than water